IIT JEE Practice Question and Answer

Q: There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ? 1922 0

  • 1
    36 minutes
    Correct
    Wrong
  • 2
    48 minutes
    Correct
    Wrong
  • 3
    35 minutes
    Correct
    Wrong
  • 4
    60 minutes
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "60 minutes"
Explanation :

Answer: D) 60 minutes Explanation: For 1 hour, 20 minutes is slower, then for 06 miuntes - 2 minutes is slower30 minutes - 10 minutesActual time | false time 12 12 01 PM 12:40 PM (20 minutes slower) 02 PM 01:20 PM 03 PM 02:00 PM So, when actual time is 3pm, the false time is 2 pm.So, it loses 60 minutes when it shows 2 pm.

Q: By investing Rs. 1620 in 8% stock, Michael earns Rs. 135. The stock is then quoted at ? 1922 0

  • 1
    Rs. 145
    Correct
    Wrong
  • 2
    Rs. 245.1
    Correct
    Wrong
  • 3
    Rs. 96
    Correct
    Wrong
  • 4
    Rs. 75
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Rs. 96"
Explanation :

Answer: C) Rs. 96 Explanation: Michel earns Rs. 135 by investing Rs. 1620To earn Rs. 8 how much he have to invest...? = (8 x 1620)/135 = Rs. 96

Q: The Magna Carta established the rights of 1921 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

The Magna Carta has long been cited as the original source for such documents as the United States Constitution. It was a document that presented ideas that were progressive beyond its time, one that still bears relevance today. The Magna Carta primarily established the rights of 13th-century English citizens. It granted protection from unlawful imprisonment and swift justice, which established the idea that everybody, including the king, was subject to the letter of the law.

Q: "Tigris River" flows through which of the following countries ? 1921 0

  • 1
    Iran
    Correct
    Wrong
  • 2
    Italy
    Correct
    Wrong
  • 3
    Iraq
    Correct
    Wrong
  • 4
    Egypt
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Iran"
Explanation :

Answer: A) Iran Explanation:

Q: Which gas is known as "Fuel of Future" ? 1921 0

  • 1
    Methane
    Correct
    Wrong
  • 2
    Oxygen
    Correct
    Wrong
  • 3
    Neon
    Correct
    Wrong
  • 4
    Hydrogen
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Hydrogen"
Explanation :

Answer: D) Hydrogen Explanation: Because of its being pollution free and  combustion efficient, Hydrogen gas is  called fuel of future. Because of its origin in marshy places, Methane is called as 'Marsh Gas'.

Q: Basophils increase in number when parasitic invasion occurs. 1921 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: FALSE. Basophils number will not be increased when parasitic invasion occurs.   Basophils are a type of white blood cell. Although they're produced in the bone marrow, they're found in many tissues throughout your body. They're part of your immune system and play a role in its proper function.   Basophils appear in many specific kinds of inflammatory reactions, particularly those that cause allergic symptoms. If your basophil level is low, it may be due to a severe allergic reaction.   Basophils contain anticoagulant heparin, which prevents blood from clotting too quickly. They also contain the vasodilator histamine, which promotes blood flow to tissues.

Q: 12 boys decided to constribute Rs. 750 each to an Orphange. Suddenly few of them boys dropped out and consequently the rest had to pay Rs. 150 more. Then the number of boys who dropped out? 1921 0

  • 1
    4
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "2"
Explanation :

Answer: C) 2 Explanation: Total money decided to contribute = 750 x 12 = 9000 Let 'b' boys dropped The rest paid 150/- more => (12 - b) x 900 = 9000 => b = 2 Hence, the number of boys who dropped out is 2.

Q: The average of the ages of Sushanth, Krish and Rishi is 43 years and the average of the ages of Sushanth, Rishi and Rohit is 49 years. If Rohit is 54 years old, what is Krish's age ? 1921 0

  • 1
    34 years
    Correct
    Wrong
  • 2
    26 years
    Correct
    Wrong
  • 3
    24 years
    Correct
    Wrong
  • 4
    36 years
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "36 years"
Explanation :

Answer: D) 36 years Explanation: Let present ages of Sushanth = w, Krish = x, Rishi = y and Rohit = z , thenw + x + y = 43 x 3 = 129 ---(i) andw + y + z = 49 x 3 = 147 ---(ii)Subtracting (i) from (ii), (w+y+z) - (w+x+y) = 147 - 129 , z - x = 18 ---(iii)Given Rohit's age=z=54, so from (iii), x = 54 - 18 = 36.Therefore, Krish age is 36 years.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully